Josfi mabia aulestia



- v UNITED STATES PATENT OFFICE.

JOSE MARIA-AULESTIA, OF MADRID, SPAIN.

SPEGEFICATION forming part of Letters Patent No. 240,940, dated May 3, 1881.

Application filed November 22, 1880. (No specimens.) Patented in Spain September 1, 1889.

To all whom it may concern:

Be it known that I, J 08E MARIA AULESTIA, of Madrid, Spain, a subject of His Majesty the King of Spain, have invented anew, useful, and Improved Process for Waterproofing Cloths, Paper, and Analogous Fabrics, and a solution therefor, (for which I have received Letters Patent in Spain, No. 711, dated 1st September, 1880, for the term of twenty years;) and 1 do hereby declare that the following is afnll clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to that class of processes by which garment-cloths, bagging, canvas paper, and analogous fabrics are rendered water-proof, as also to the solutions, com

pounds, or ingredients employed for such waterproofing.

By the use of the invention, as hereinafter set forth, materials of the above description may be rendered repellent to the action of water, while the cloth or fabric will retain its original appearance.

To attain these desirable results 1 take, first,

a soap made from a good quality of carbonate of soda/and best oil (preferably olive)free from grease (fatty matter) or other impurities. Said soap is cut into small pieces, and fifty-seven grams five deeigrams (about two ounces, full) are placed for twenty-four hours in a suitable vessel or basin containing four liters (aboutthree and a half quart-s, full) of filtered Water.-

The liquid is then slowly heated to a boilingpoint and the waterlost by evaporation is replaced. Second,in a second vessel (preferably of earthenware) sixty grams (two ounces one and a half drams, full) of pure beeswax (which may be either in its natural state or refined and whitened where it is to be used upon delicate fabrics) is heated until'itbecomes a liquid mass,- when it is added tosolution No. 1, into which a further quantity of four liters (three and a half quarts, full) of boiling water is poured. The combined solution is then thoroughly mixed by stirring or in any other convenient manner until a perfectly homogeneous liquid solution is obtained.

I have found the following to be a conven been thoroughly washed (in pure or filtered I water) and dried, is Wound around a cylinder,

which may be placed at one end of a table, the

cloth being fed across this table to a receivingcylinder at the other end. As the cloth passes over the table its upper side is thoroughly and evenly washed over with .the waterproofingliquid, While'its then under side is washed over as the cloth is Wound upon the receiving-cylinder. A convenient manner of applying said liquid to the cloth is by means of fine sponges. The cloth is then treated with a solution composed in the proportions of four liters (three and a half quarts,fu1l) of filtered water to forty grams (one ounce three and a half drams, scant) of alum. This solution maybe applied by sponges in the manner above indicated;

but it must be bornein mind that the colors of many prints (calicoes) are not fast, and in certain cases the proportion of alum must be varied, as also the temperature at which the the top of which consists of a line wire-gauze netting. This final treatment by steam is advantageous for the purpose of rendering the surface of the cloth smooth and to prepare it for calendering, but'is'not absolutely necessary, as it is evident the cloth may be hot-calendered. v

'I do'not confine myself to the exact proportions of the various solutions, or to the method described by which said solutions are applied,

solution is applied, and these points can best as these may be altered or modified to meet existing circumstances as to machinery or labor at hand and the quality or description of the cloth or fabric to be treated.

I am aware that solutions of soap and alum have been heretofore known for waterproofing fabrics, said solutions to be used successively in treating said fabrics; and I am also aware that beeswax has been described in connection with other materials, the same being set forth too 

